Riders are soon lost in a world of tall trees and rugged hills, with tantalising glimpses of the distant peaks of the Velebit mountains.

BBC: Croatia��s adventurous heart

Today, however, a range of newly popular active sports are reinvigorating the former battlefields, as travellers discover a world of ice-blue rivers, rugged hills and thick forests, which unfurls south from Karlovac to meet the vertiginous Velebit mountains that rise up towards the coast.

BBC: Croatia��s adventurous heart